"The BBC's documentary on Scotland's lockdown raises huge questions about the effectiveness of the Scottish Government's test, track and trace operation at the early stages of the coronavirus outbreak.

"In both the instance of the Nike conference and the Chambers' family birthday party mistakes were clearly made. This was at a point when tracers were still only dealing with tens of cases, not thousands.

"If we are to rely on this system to get us back to normality and protect vulnerable people we need to see testing dramatically increase and a vast forensic contact tracing operation."